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fix: clamp scrollbar hitbox at end of document

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This commit is contained in:
CJ van den Berg 2025-12-17 18:24:04 +01:00
parent 8745cd05d2
commit 8dbc5765d9
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 9 additions and 7 deletions
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16
src/tui/scrollbar_v.zig
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@ -121,18 +121,21 @@ fn pos_scrn_to_virt(self: *const Self, pos_scrn_: u32) u32 {
return @intFromFloat(pos_scrn * ratio);
}
fn is_pos_scrn_in_bar(self: *const Self, pos_scrn: u32) bool {
return pos_scrn > self.pos_scrn and pos_scrn <= self.pos_scrn + self.view_scrn;
fn is_pos_scrn_in_bar(self: *const Self, pos_scrn: u32) ?u32 {
const max_pos_scrn = self.size_scrn -| self.view_scrn;
const curr_pos_scrn = @min(self.pos_scrn, max_pos_scrn);
return if (pos_scrn > curr_pos_scrn and pos_scrn <= curr_pos_scrn + self.view_scrn)
curr_pos_scrn
else
null;
}
fn click_at(self: *Self, y: i32, ypx: i32) void {
const pos_scrn = self.y_coord_to_pos_scrn(y, ypx);
if (self.is_pos_scrn_in_bar(pos_scrn)) {
self.mouse_pos_scrn_offset = pos_scrn -| self.pos_scrn;
@import("std").log.debug("click: {d}:{d}", .{ pos_scrn, self.mouse_pos_scrn_offset });
if (self.is_pos_scrn_in_bar(pos_scrn)) |curr_pos_scrn| {
self.mouse_pos_scrn_offset = pos_scrn -| curr_pos_scrn;
} else {
self.mouse_pos_scrn_offset = self.view_scrn / 2;
@import("std").log.debug("click off: {d}:{d}", .{ pos_scrn, self.mouse_pos_scrn_offset });
self.move_to(self.pos_scrn_to_virt(pos_scrn -| self.mouse_pos_scrn_offset));
}
}
@ -140,7 +143,6 @@ fn click_at(self: *Self, y: i32, ypx: i32) void {
fn drag_to(self: *Self, y: i32, ypx: i32) void {
const pos_scrn = self.y_coord_to_pos_scrn(y, ypx) -| self.mouse_pos_scrn_offset;
const pos_virt = self.pos_scrn_to_virt(pos_scrn);
@import("std").log.debug("drag_to: {d:}:{d}:{d}", .{ pos_scrn, pos_virt, self.mouse_pos_scrn_offset });
self.move_to(pos_virt);
}